Back Hiller HH-120 "Hornet"
1950-1965 - pro

Hiller HJ-1

Side-by-side two seat ultra-light helicopter with two Hiller ramjets attached to the ends of the rotor blades. No tail rotor. Fixed tricycle u/c. One Prot. N6728C.

R.Simpson "Airlife's Helicopter and Rotorcraft", 1998

Hiller HH-120


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